"Huh?" Liu Chan said in confusion: "Why did Zhang He withdraw his troops? Why didn't he fight?"

Zhang He suddenly withdrew his troops, which puzzled Liu Chan. He also wanted to see Ma Dai fighting Zhang He.

"Your Majesty!" Guo Huai said with a smile: "Zhang He has seen the Prime Minister here, and he must have known that our army's main force has arrived in Tongguan. Tongguan was originally a dangerous pass, but now our army's main force is guarding. If the Wei army wants to capture Tongguan, it will not be easy."

After Guo Huai finished speaking, Zhuge Liang nodded slightly.

Liu Chan was suddenly overjoyed: "Xiangfu, now the danger of Tongguan has been resolved. Can our army lead the troops to Chang'an and seize the land of Guanzhong in one fell swoop?"

Tongguan is the gateway to Guanzhong. The Han Dynasty occupied the natural danger of Tongguan. It was not that easy for the Wei army to send troops to rescue Guanzhong.

Although the Wei army could also enter Guanzhong from Wuguan or Pubanjin Ferry.

However, when Liu Chan sent troops to Guanzhong, he had already made arrangements for these two passes. Yang Tongshan was guarding Wu Pass, and Guo Wei occupied Pubanjin.

When the troops arrived in Chang'an, Liu Chan divided the 15,000 new troops into four routes.

Chang'an was not the city he first seized. After all, Chang'an was located in the Guanzhong Plain. Even if he led his troops to forcibly capture Chang'an, he might not be able to defend it.

Because once Cao Wei learned that Chang'an had fallen, he would inevitably send troops from the Central Plains to reinforce Guanzhong. The Han Dynasty is now competing with Cao Wei for military affairs, which is completely a way to die.

If you want to seize Guanzhong, the first thing you have to do is not to occupy Chang'an, but to block Cao Wei's reinforcements. As long as Cao Wei's reinforcements cannot enter Guanzhong, the Han Dynasty may have the opportunity to capture the Guanzhong area. After all, before the Prime Minister's first Northern Expedition, Cao Wei did not deploy a lot of troops in the Guanzhong area.

When the Central Plains advances to Guanzhong, they must advance from Tongguan, Wuguan or Pubanjin. These are the three passages to enter Guanzhong. If these three dangerous passes are blocked, the connection between the Central Plains and Guanzhong will be cut off.

In comparison with the three passes, Tongguan and Wuguan are particularly important. Although the relevant passes are blocked, the Wei army can attack at any time. Therefore, when the troops were divided, Liu Chan brought 5,000 new troops and distributed them to Yang Tongshan 5,000 people.

Although Liu Chan was a time traveler and had never led a war, as a fan of the Three Kingdoms, he still had some understanding of this era or several passes.

Before the Prime Minister's Northern Expedition, these three passes were located in the hinterland of Cao Wei, and there were soldiers and horses stationed in time, so their defense would be relaxed, because they would never dream of the Han army suddenly appearing in front of them.

Liu Chan had also learned about this history. In history, Zhuge Liang's first Northern Expedition almost succeeded because Cao Wei did not expect Zhuge Liang to send troops. At that time, the Guanzhong area did not deploy enough troops, so that Zhuge Liang's army suddenly appeared in Qishan, causing the three counties of Longyou to surrender to Zhuge Liang soon.

If it weren't for the loss of Jieting later, which led to Prime Minister Zhuge's first Northern Expedition, history might not be what we are familiar with.

Now that the time traveler has become Liu Chan, he cannot let go of such a good opportunity. He also knows very well that if the great man wants to change his original destiny, Zhuge Liang's first Northern Expedition was a turning point.

The first Northern Expedition must be successful.

Because once this Northern Expedition fails, it will be difficult to get such a good opportunity again in the future, because Cao Wei already knew that the Han army was thinking about Guanzhong and would inevitably strengthen the defense of Guanzhong area. Isn’t that what happened in history?

As the saying goes, it is rare to have a few times to fight in life. If you try to turn a bicycle into a motorcycle, since fate has made me travel through time and space and become this Liu Chan, you cannot let it go.

The surprise attack on the three passes and blocked the reinforcements of Cao Wei. Even if he could not occupy the entire Guanzhong in the end, he could at least give the Prime Minister more time to take down Longyou.

So Liu Chan and Yang Tongshan led 5,000 new troops to raid Tongguan and Wuguan, guarding these two routes where Cao Wei could enter Guanzhong.

Of course, defending Tongguan Wuguan is not a perfect solution, so Guo Wei was asked to lead three thousand new troops to raid Pubanjin.

Compared with Tongguan and Wuguan, Pubanjin has its own natural advantage - the Yellow River.

Even if Cao Wei wanted to cross the river from Pubanjin and then advance to Guanzhong, he had to be able to cross the Yellow River first.

Although the troops in the three passes are not large, it is still possible to cut off the connection between Guanzhong and the Central Plains.

If Cao Zhen, Xiahou and others want to contact Luoyang, they must send someone to pass the three levels before they can send the news to Luoyang. Now that all three levels are in the hands of the great man, it is difficult for Guanzhong to contact Luoyang easily.

Even if an abnormality is found in Luoyang later, when Luoyang reacts, maybe Prime Minister Zhuge has already controlled Longyou, and Liu Chan can find a way to withdraw from the three passes and return to Longyou, or Hanzhong.

But what surprised Liu Chan was that he originally sent Shen Ji'an to inform Zhuge Liang that he wanted Zhuge Liang to quickly occupy Longyou without worrying about Cao Wei's reinforcements.

But he didn't expect that Prime Minister Zhuge was more concerned about the safety of his little emperor. He led his troops into Guanzhong in a row and wanted to rescue him, the little emperor who seemed to be in trouble.

When Liu Chan learned that Zhuge Liang was entering Guanzhong, he had to adjust his thinking, that is, he had to defend the three gates.

Otherwise, when Cao Wei broke through the three passes, even if the Prime Minister led his troops to arrive, with the current military strength of the Han Dynasty, he would not be able to compete with Cao Wei's cavalry in the Guanzhong Plain.

From February 28th, Liu Chan led 15,000 new troops into Ziwu Road, and today Zhang He retreated to the camp, it took exactly one month.

This month seemed like a century passed for Liu Chan. On the surface, he seemed nothing happened, but in fact he was always nervous, afraid that there would be an accident in any link.

Although he did not do very perfectly this month, he was satisfied at this moment. After all, this is a troubled time, and he is just an ordinary online writer from the future world.

It is already rare to be able to do this now.

Perhaps God blessed him, although it was very dangerous for him to send a surprise troops into Guanzhong this time, he did not make much mistakes.

Unexpectedly, reasonable.

Because of the surprise attack on the three passes, Luoyang was forced to postpone the time to learn the news. Although Cao Wei reacted quickly next time, he divided his troops into three groups to reinforce Guanzhong.

Zhang He led 50,000 main force to attack Tongguan, Sima Yi led 30,000 auxiliary force to attack Wuguan, and Cao Rui led 20,000 to force the crossing of Pubanjin.

By March 29, Cao Wei's three reinforcements failed to successfully break through the barriers.

I won’t talk about Tongguan where Liu Chan guarded it, because Liu Chan prepared lime in advance and caused Zhang He to suffer heavy losses. Now that Zhuge Liang has arrived in Tongguan, Zhang He’s journey has basically been solved.

Let’s talk about Sima Yi, who was assisting the attack, he has not yet arrived at Wuguan along the way, because he is still busy dealing with the rebel general Meng Da.

Liu Chan knew about this in advance.

There is a record in history that on the eve of the first Northern Expedition, the Prime Minister learned that Meng Da was willing to surrender, so he sent someone to contact Meng Da and persuaded him to surrender in time. However, Meng Da was capricious and swaying from both sides and delayed in deciding on surrender.

So Zhuge Liang used a trick to reveal Meng Da's preparation for rebellion against Wei and return to Han to Shen Yi, who was incompatible with Meng Da, and forced Meng Da to return to Han as soon as possible.

The result of history is very simple. Shen Yi exposed the rebellion of Meng Da. Sima Yi's troops arrived in Xincheng on the 8th to quell the rebellion and finally destroyed Meng Da.

There were various comments about Meng Da’s rebellion against Wei and Return to Han in later generations, but Liu Chan would not care about this now.

Because in his opinion, he could make full use of Meng Da's return to Han.

After all - chance is rare.

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Chapter completed!